package com.twq.springcloud.controller;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.twq.springcloud.pojo.Dept;
import com.twq.springcloud.service.DeptService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

//提供Restful服务
@RestController
public class DeptController {
//    @Autowired
//    private DeptService deptService;
//    //获取一些配置的信息，得到具体的微服务
//    @Autowired
//    private DiscoveryClient client;
//
//    @PostMapping("/dept/add")
//    public boolean addDept(Dept dept) {
//        return deptService.addDept(dept);
//    }
//
//    @GetMapping("/dept/get/{id}")
//    public Dept queryById(@PathVariable("id") Long id) {
//        return deptService.queryById(id);
//    }
//
//    @GetMapping("/dept/list")
//    public List<Dept> queryAll() {
//        return deptService.queryAll();
//    }
//
//    //注册进来的微服务，获取一些消息
//    @GetMapping("/dept/discovery")
//    public Object discovery() {
//        //获得微服务列表的清单
//        List<String> services = client.getServices();
//        System.out.println("discovery=>services:" + services);
//        //得到一个具体的微服务信息
//        List<ServiceInstance> instances = client.getInstances("SPRINGCLOUD-PROVIDER-DEPT");
//        for (ServiceInstance instance : instances) {
//            System.out.println(
//                    instance.getHost() + "\t" +
//                            instance.getPort() + "\t" +
//                            instance.getUri() + "\t" +
//                            instance.getServiceId() + "\t"
//            );
//        }
//        return this.client;
//    }



    @Autowired
    private DeptService deptService;

    @GetMapping("/dept/get/{id}")
    @HystrixCommand(fallbackMethod = "hystrixGet")
    public Dept queryById(@PathVariable("id") Long id){
        Dept dept = deptService.queryById(id);
        if(dept == null){
            throw new RuntimeException("id => " + id + ",不存在该用户，或者无法找到");
        }
        return dept;
    }

    //备选方法
    public Dept hystrixGet(@PathVariable("id") Long id){
        return new Dept().setDeptno(id)
                .setDname("id => " + id + "没有对应的信息，null--@Hystrix")
                .setDb_source("no this database in mysql");

    }


}
